Automatic lubricator.



W. PPEIFER AUTOMATIC LUBRIGATOR. AFFLIOATIOH TILED MAE. Z, 1910.

Patented June 7, 1910.

2 SHEETS-SHEET 1.

W. PFEIFER AUTOMATIC LUBRIGATOR. APPLIUATIOH rum mm.2.191o.

Patented June 7, 1910.

2 SHEETS-SHEET 2.

lmitncamm To all whom it may concern:

WILLIS PFEIFER, OF SIMPSON. KANSAS.

AUTOMA IC LUBRICATOB.

l '7 a Specification of Letters Patent. Patented June Application filedMarch 2, 1910. Serial No. 546,868. I

Be it known that I, 'WiLLis PFEIFER, a

I citizen of the limited States, residing it.

Simpson, in the county of- Mitchell, State of Kansas, have inventedcertain new and useful Improvements in -Autoinatie Lubricators; and I dohereby declare the follow ing' to be a full, clear, and exact description.

of the invention, such as'will enable others skilled in the art 'towhich it appertains to make anduse the same. This invention relates tolubricators and has special reference to a force feed axle lubricator.

whi ch the grease clip.

. The principal object-of the invention is to provide a lubricatpr ofthisfidescription in the feeding mechanism may be readily removed forthe purpose of refilling With the above and otlicr objects in view, aswill be hereinafter apparent, the invention consists in general ofcertain novel. .de-

. tails of construction andcoinbinations of parts hereinafter fullydescribed, illustrated in the accompanying: drawings, and spe-'cifically set forth in the claims.

In the accompanying drawings, like' characters of reference indicatelike parts in the several views, and Figure 1 represents a sideelevation of a portion of an axle and wheel hub equipped with thisinvention, certain of the parts being. shown in sectionthe better todisclose the mechanism. Fig. 2 is a section on the line 2-2 of Fig. '1.Fig. 3 is asection on the line; 3-3 of Fig. 1, the sec- Fig. 4.

tion being taken looking upward. is a section on the line %4 of Fig. 2.Fig. 5 is a detail section on the line 5-5 of Fig, 2. Fig. 6 is a topplan view of a lubricator with the protective casing removed.

The numeral 10 indicates a portion of one end of a vehicle axle and onthis axle is 'ournaleda wheel hub, a ortion of which is indicated at 11.Secure to t raxle adjacent the wheel hub is a base e 12 constituting themeans for attaching the protective casing to the axle. Fastened to thisbase plate 12 by means of bolts 13 is a protective casing 14 the bodynzfwhich is rec-. tanlgular inform and which is provided wit a segmentalportion 15 pro'ecting over the wheel hub 11 and having a ownwardlyturned lip 16 which engages over a rib 1 formed on the wheel hub. Thetop of this casing 14'is provided with cap openin 18 and 19 for purposeshereina er escribe'd, the openin 19 being nearer th'e end of the casingtowaigl the wheel hub than the opening 18. Through the axle. 10 extendsan oil. passage 20 which leads .into the axle jOlll'Illll within thewheel hub and is'tl ere provided with suitable discharge openings 21.The'end of this oil passage is provided with a threaded opening 22 andan opening 23 is formed inthe base plate 12.

A compression grease cup is indicated at 24 and this grease. cup isprovided with the usual cap'25, plunger 26 and lungei" stem 27. Thisplun er stem 27 is t readed and between the p unger .26 and cap 25 is.0.

25 the plunger. 1S.I)I'0Vldd .with a-nut 29-an'd by the rota -tion of:this nut the plungeris forced down. 1

spring 28. 'Above-the cap by, the action of the spring. or forced upagainst saidaction. Fixed to. this nut' 29 is a plunger nut worm wheel30, the rotation of.the worm wheel thus-efi'ectin ,the' movement of theplunger.

provided with inwardly turned ends which above the periphery ofthe..worin wheel 30.'

In order to actuate the worm wheel 30 there is provided a worm wheel cap32 having an opening 33 formed-centrallythereof, which opening fits overthe plunger stem 27 and is held from removal by a screw 34Diaitietrically disposed on the cap 25 are springclips 31 he in closelyspaced relation immediately threaded into the end of the. plunger stem.

This screw ordinarily ermits movement of the worm wheel cap a ong theplunger but the spring clips 3l.serve to hold the be close down on theworm wheel 30 by exten ing over the edges of the;ca T

On the cap 32 are formed earings 34' for ashaft 35 provided with a, worm36. This shaft is grooved as indicated at 37 and through .one of thebearings passes a set screw 38 which engages in the groove 37 andholdsthe shaft from longitudinal movement in said bearings whilepermitting its rotation. At the end of one of these bearingsis a casing39 similar in. shape to the cap 32 and in this casing on the shaft 35 isfixed aworm wheel40. The casing 39,

is prqvided with bearings 41-s'iinilarto-the bearings 34' but thefirst-inent1oned bearings are horizontally disposed while the bearihgs41 are vertically arranged... Inthe bearings 41 is a shaft 42 providedlike theshaft 35 with a worm 4'3,- groove 44 and set screw 45. The shaft42 exte nds downward and has its lower end journalod in a bearing- -ingrotated on the axle.

.any'needful access may through 46 formed in the base. Adjacent itslower end is a star wheel 47 and on the wheel hub 11 is fixed a finger48 arran ed to c'ntact with and rotate the star whee as the ub is Thecapped opening 18 lies immediately above the plunger screw 34 and thecap ed 0peningl9 lies above the shaft 42 so tiat be had to these partsof the mechanism without removing the entire protective casing.

In the operation of the device the grease cup is filled with grease andthe cap screwed on. At this time the plunger is positioned at the top ofthe grease cup. The plunger screw 34 is removed and the actuating wormsandshafts positioned over this screw, the cap 32 being! forced downuntil held in position by t e sprin s. The screw 34 is placed inposition and it will be noted that when the parts are roperly assembledthe lower end of the shaft 42 is held in the bear- 46. As the vehi lemoves over the ound the finger 48 strikes the star wheel 47, rotates the"shaft 42 and this shaft, through the medium ofthe worms, worm wheelsand'shafti 35, actuates the plunger nut so that the plunger is graduallyreleased and allowed to move down under the action of, the spring, thus'forcing the grease the oil passa e inside of the wheel-hi1 There hasthus beenprovided a simple and efiicient device of the kind describedand for the piir ose specified.

Havin t us described the invention, what is elaime as new,'is:-

said'stem; of a gear on .tion'on said hub, and a' for said gear inoludmga 1. The combination with an axle, a wheel hub :mounted thereon, and aforce feed grease cupomountedop the axle and includmg a' threadedplunger stem and a nut on said nut-, a pro ecdrivihgmechanism when thelatter is in posltlon.

and lubricating the its lower end 10urnaled 1n the axle, a worm on thesecond second shaft, axle, and a projection fixed on the wheel shafthaving astar wheel mounted thereon and adapted to lie in the ath of saidprojection, a cap fittin on sai stem and covering saidgear; an

means to hold said cap removabl on the stem, said means comprisingspring arms attached to said grease cup and having inwardly directedends engaging over the cap 2. In a device of the kind described,-an axleprovided with an oil passage, a grease cup mounted on said axle andcommunicating with the oil passage, a rease cup cap closing the up erend of said grease cup, a

plunger in sai grease cup, a stem said plunger and extending throughsaid cap,

a 'nut on said stem abovesaid cap, a gear fixed to said nut and abovethe same, a cap provided with a central opening mounted on said stem andcovering said gear, spring arms attached to the cap .of the grease cupand having inwardly directed ends engaging. over the cap of the ear whenthe latter is in position, bearings osmed on said cap, a shaftjournaled' in said bearin s, a worm ;o n said shatt engaging with t- .eear when the cap is in position, a worm wheelon the end of said shaft, acasing surrounding said worm wheel, bearings formed on said .ea'sing, asecond shaft carried in said bearin s-and extendin downward alongside ofsai grease cup, sai second shaft having shaft meshing with the wormwheel on the first shaft, a star wheel on the a wheel hub mounted onsaid' hub and adapted to contact with the star wheel as the hubrevolveson the axle.

In testimony whereof, I aflix my signature, in presence of twowitnesses. \VILLIS PFEIFER.

Witnesses:

E. J. Foo'rn, IVA BURNS.

